Answer:
American operatives who led secret missions
Explanation:
These select people were hired by american military to carry a language little to no people knew. However, they used old Native American roots as part of their secret language.
It was the "Transcontinental railroad" that great helped to further the Westward Expansion in the United States after 1865, since although it wasn't oficially completed until 1869, it began to reach further and further west beginning at this time.
The cardinal, collateral and subcolateral points are widely used by the compass - millennial object of geographical location. Even the most current technologies, such as GPS and internet maps, need cardinal points to guide their cartographic arrangements. Therefore, understanding these points is of fundamental importance for those who wish to use these instruments.
